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2 Sheets-Sheet l May 211-1929- E. M. BRENNAN ET Ax.

FEEDING DEVICE Filed March 8, 1928 May 21, 1929. E. M. BRENNAN ETALFEEDING DEVICE Filed March 8, 1928 2 Sheets-Sheet 12 to. which arefastened a drum 13 having Patented May 21, 1929.

UNITED STATES PATENT OFFICE.

EDWARD M. BRENNAN, OE SPRINGFIELD, OHIO, AND'ERWIN H. HossEY, OE MINNE-APoLIs, MINNESOTA, AssIGNoRs To THE BAUER BROTHERS COMPANY, OE sPRING- lFIELD, OHIO, A CORPORATION or OHIO.

Appiication :ned March s, 1928. semi No. 260,136.

.This invention relates to feeding devicesA particularly adapted forfeeding material, together with a supply of fluid such as water, orwater and steam, to apparatus such as attrition mills.

The object ,of the invention is to provide an improved arrangement forintroducing water, or water and steam, to the feeding mechanism so thatthe water, or water and steam, are intimately mixed with the materialbefore being introduced into the mill.

In the accompanying drawings:

Fig. 1 is a plan view of feeding device embodying the improvements.

Fig. 2 isa view partly in side elevation and partly in longitudinalsection, the. section being on the line 2-2 of Fig. 1.

Fig. 3 is a vertical section, the section being on the line 3 3 of Fig.2.

Fig. 4 is a side elevation of one of the nozzles for injecting water orsteam, or both.

Referring to the drawings, 1 is a casing Open at the top andbottom andmounted upon a suitable 4hollow pedestal 2. A horizontal longitudinallyextending shaft' 3 is mounted in suitable bearings 4 carried in the-outer end of hollow bosses 5 formed integrally with the end walls yofthe casing 1, each of these bosses also having a bushing or sleeve 6 oflignum vitae surrounding and cooperating with a spiral groove 7 in theshaft to prevent leakage of the water. Se-I cured to the reduced'portion of one. end of the shaft is a worm wheel 8 Ineshing with yaworm 9 on one end `of a ltransversely arranged horizontal. shaft l0, theother end of which has a power transmission device, such as 11 to whichpower is transmitted from any suitable source .tnot shown). Secured tothe; shaft 3' are the/hubs of bell-shaped webs 'feed-ing devices such asteeth or projections An adjustable cut-ofi:l plate 15 is secured to thecasing 1 to assist in regulating the feed of the material. Arranged inthe forward side wall and also in the rear side walls is a nozzle con.

sisting of an elongated hollow7 body 16 which has on its outer side athreadednippl'e 17 to which maybe connected a suitablefsupply line (notshown) forwater, kor `water and steam. The inner side wall of thishollow body is providedwith a series of jet openhollow bodies fit inelongated slots in the walls of the casing and are provided with flanges19 by which they are bolted to the casing walls.

,The feeding drum is offset or placed. at one side of the longitudinalcenter of the casingso that the feeding teeth or projections 14 closelyhug the walls of the casino on the upside but are quite well removedtherefrom on the down side to improve the feed action. p

To prevent air binding below the feeding mechanism, the pedestal 2 isprovided with air inlets, preferably covered by screens 21, these inletsbeing formed by enlarging the end walls of the pedestal. To prevent thewater iowing with the material from splashing out through the air inletopenings, the walls of the pedestal are so formed as to providedepending` lips 22 which reject downwardly and form inner walls or theair inlet openings so as-to deflect the liquid downwardly at the pointsofthe air openings. l

By this arrangement it will be seen that leffective means are furnishedfor supplying terial before introducing into the mill.

Having thus described our invention, we claim:

1. In a feeding device` of the character described, a casing having anupper inlet opening and a lower discharge opening, a conduit leadingfrom the discharge opening in said casing, feeding mechanism formaterialloeated in said casing and means for ejecting fluid into lsaidcasing, said conduit being provided with an airl inlet opening formed byextending the entrance thereof above the inner wall to prevent splashingof the fluid therethrough. v

2. In a feeding device of the character described, a casing having inletand discharge openings for material, 'feeding mechanism therein for saidmaterial, an elongated nozfor discharging fluid into said easing, saidnozzle being confined in the wall of said casing so as to be removedfrom the path of the material passing through the casing.

3. In a' feeding mechanism of the characdischarging Huid into. saidcasing so that ter described, a casing, a rotatable feeding saidnozzleiwill be out of the path of ma- 10 device in said casing, saiddevice being arterial passing through the casing.. y ranged to closelyhug at least one Wall 'of In testimony whereof, We have hereunto 5 said'casing at one point in the rotation vset our hands this 6th day ofMarch, 1928. thereof, and an elongated nozzle confined EDWARD MlBRENNAN. in thewall of said casing at that point for ERWIN H. HUSSEY.

